A Ewing woman today pleaded guilty to killing her mother with a pickax on Halloween in 2012.

Regina Wallace, 34, pleaded guilty to a charge of aggravated manslaughter in a deal that calls for her to be sentenced to 30 years in prison. She would have to serve 25½ years before she is eligible for parole.

Wallace’s attorney previously said she has a history of mental illness and was not taking her medication when she struck her mother twice with the pickax on Oct. 31.

Wallace sought help at a Lancaster, Pa., hospital on Nov. 1 and admitted to hospital staff that she had killed her mother, Assistant Prosecutor Al Garcia has said. Wallace received a mental health evaluation and was declared competent, but her attorney, Nicole Carlo, today asked Superior Court Judge Robert Billmeier to take her mental health issues into consideration when Wallace is sentenced on May 2.

“While it does not rise to the level of defense, we would like your honor to consider it for sentencing,” Carlo said.

Wallace admitted in court today that she struck her mother in the head and in the chest at her home on the 100 block of Buttonwood Drive and then left her to die.

Hospital employees contacted Ewing police after Wallace told them of the crime. Responding officers saw Sharon Wallace on the couch through the front window, entered the home and found her to be dead, prosecutors said.